Push-plug receptacle



Aug. 10 ,-1926. 1,595,860

, R. E. DE LAMAR I PUSH PLUG RECEPTACLE Filed June 12; 1922 2 Sheets-Sheet 1 IN V EN TOR wad 02p 539461014,

- ATTORNEY Aug 10 1926. 1,595,860

R. E. DE LAMAR PUSH PLUG RECEPTACLE Filed June 12, 1922 2 Sheets-Sheet 2 IN VEN TOR I fem 04M a 178mm,-

' l ATTORNEY hatented Aug Elli, lxfifitdo rattan-t RUDOLPH E. DE LAIMAR, 01'' NEW YORK, N. Y ASSIGNOR, BY IMESNE ASSIGNMENTS, TO

THE ARRQ'W ELECTRIC COMPANY, OF HARTFORD, GQNNECTIGUT,

PUSH-THUG nnonr raenn.

A CORIPQRATIQ'N Application filed June 12, 1922. Serial No. 56?,601.

This invention relates to electrical connector devices, wiring attachments and the like, and more particularly appertains to improvements in push plug receptacles.

Primarily an object of the invention is to produce an improved push plug receptacle "for use in connection with my invention on lighting fixture and outlet receptacle as shown in my co-pending application for patent, Serial Number 567,602, filed June 12, 1922.

An additional object of this invention is to produce an improved push plug receptacle which is simple in design and construction rendering the same economical to manufacture, and which push plug receptacle performs manifold duties in the way of supplying electric current, not only to wall .and lighting fixtures, but also to domestic electrical appliances.

By using my improved push plug receptacle, electrical installation and, building construction is somewhat simplified inasmuch as the wiring connections as madeby' the mechanic or contractoron the job are completed when he installs the receptacle in an outlet box and applies the cover, whereas without this improvement he must proceed to establish a wiring connection between the lead wires and lighting fixture wires; and also the plug receptacle is readily made available for supplying current to household electrical appliances as wellas lighting fixtures.

The accompanying drawings illustrate an embodiment of my invention, and though there is shown a preferred form of construction, I claim the right of protection as to all changes in design and construction as obviously come within the scope of my invention.

Figure 1 illustrates a front face view of entering into the construction of the plug receptacle and by which the said receptacle is mounted in an outlet box.

Figure 7 illustrates in perspective asheet insulator disposed between the metal base stamping and the receptacle body.

Figure 8 is a cluster view of the improved contact parts, and shows a double bladed contact part, a wire binding post, and a screw-which threads into the said post. This cluster view is arranged in series with the parts slightly spaced apart indicating their relative position just at the time the said parts are about to be brought together in complete assembly.

A receptacle constructed in accordance with the plans of this invention embodies a metal base with cars by which the receptacle is anchored in an outlet box. A receptacle body is preferably molded of insulating material and has embedded therein improved anchor and contact parts; and the said molded body is anchored to the metal base. The receptacle has improved features which enlarges its range. of uses by the way of afiording a current outlet supply to electrical appliances or to lighting xtures, and simplifies electrical installation work.

. Referring now more particularly to the,

drawings for a further description of the invention, there is shown in Figure 6 a sheet metal stamping consistin of a frame or skeleton back plate 11 wit upturned ends 10, and ears 9 are inade on the ends 10. The cars are punched to provide suitable holes through which screws are inserted to anchor the receptacle in an outlet box as will be understood by those conversant with theart; and similarly the said ears are tapped and drilled for the reception of a threaded screw, by which a cover plate, not shown in these drawings, is secured over the face of the said receptacle preferably punched out in the center, and

- oles 14 are provided for the reception of eyelet anchor parts, as later described.

A receptacle body is made of dielectric material and in the manufacture thereof ispreferably molded to form an elongated body portion 16 having a boss 17 centrally torme on the elongated part; and this receptacle body 16-17 is molded with a. rib

The. back plate 11 is 18 formed on each end of the body and around the back edges thereof which rib till provides a groove or depression in the back face of the body substantially the size and shape of the plate 11 and end parts 10. Therefore, the molded receptacle body 16- 17 fits in between the upstanding parallel ends 10 and fits on to the plate 11 in such a manner that the molded material and metal frame 11-10 produces a flush and substantially smooth structure from end to end and at the back side thereof. 'lhe boss 17 is preferably formed cylindrical in shape and is so designed that it fits into the'opening of a cover plate which is used to produce a wall finish over outlet boxes as will be understood by those conversant with the art. The boss 17 is molded with opposite grooves 12 and an upper groove 13 which matches or registers with substantially similar grooves in the aforesaid cover plate for the reception of a bridge part to hold a lamp fixture, not shown in these drawings. The receptacle body is further provided with receiving slots 20 which extend from the face of the boss through the body to the back side thereof where a depression or groove is formed of suficient size to contain the later described.

A wire binding post 22 is drilled and tapped to receive a screw 23, and the said post is provided with upstanding spaced lugs 24 down into and between which the screw 23 is anchored with the wiring connection confined under the screw head between the lugs. The lugged end of the post 22 is anchored in the molded body. within a depression or pocket 31 so that wire connections may be made from the side to avoid the necessity of leading the wires around to the front face of the receptacle. The construction of this wire binding post is shown in Figure 8, and a pair of these parts are molded and embedded within the body 16 during the manufacture thereof. The posts 22 are molded in the body with the rear or bottom ends of the posts left straight; and thereafter the aforesaid contact blades shown in Figure 8 are mounted on the body and the bottom ends oi the said er elets are spun or riveted down as indicate at 25 in Figure 4- to hold all the parts in rigidly joined position. As will be noted from Fig. 4, the non-circular head 22 .of the binding post is laterally embedded in the insulating body, and is thus held against rotation when the binding screw 23 is set down therein.

One of the contact blades heretofore mentioned is shown in Figure 8 and consists of a plate 2'? with holes 28 in each end or the said plate. llhis late 27 is made angular in form to substantially correspond with the obtuse angle shape of the receiving slots 20 in the receptacle body. The plate 27 is formed with upstanding spring contact blades 29. "l"he plane of the two blades 29 s substantially equal to the angle or the contact parts as receiving slots and when a contact part 27- 29 is mounted in position the said blades 29 are disposed within the slot 20 and the plate 27 fits over the post 22 and the post is then riveted or spun down as aforesaid, thereby providing? both slots 20 in the boss with a spring b ade contact part 29 for establishment of trictionally engaged plug-in con nection between this receptacle and a push plug cap.

Knur ed anchor pins 33 are made with tubular eyelet ends 34, and the knurled body part 33 is molded in the receptacle body with the eyelet ends 34 projectin from the back face of the said body. A. sheet of insulating material 35 is interposed between the receptacle body and plate 11 to insure positive insulation between the current carrying contact parts and the said metal. plate support 11. The end 34 of the anchor pin 33, as aforesaid, is riveted or spun down. as shown in Figure l which securely ties the parts in joined relation, thereby producing a substantial and unitary structure.

it is to be observed that this device is assembled as to many of its parts without the use of screws except it being necessary to employ the screws 23 for establishing a joined electrical connection with electrical circuit wires. This push plug receptacle is simple in construction, comprises few parts and possesses a wide range of uses.

What it claim is:

l. A push plug receptacle comprising a molded body part grooved out on the ends and back side thereof, a punched metal frame fitted into the groove, ears made on the frame and fitting into the grooved ends, anchor pins with tubular ends molded in the body and disposed through the punched. frame, said body having receiving slots, and contact parts in the slots.

2. A push plug receptacle comprising a body part molded with receiving slots made angular in cross section, a plate made an angle equal to the angle of the receiving slots, a pair of contact blades formed on the plate and disposed in the slots, said plate having a hole punched therein, a tubular wire binding post molded in the body and disposed through the hole in the plate and being spun down to hold the plate in anchored position onto the body.

3. A push plug receptacle comprising a body part molded with receiving slots made angular in cross section, a plate made on an angle equal to the angle of the receiving slots, a pair of contact blades formed on the plate and disposed in the slots, said plate having a hole punched lar wire binding post molded in the body and disposed through the hole in the plate and being can" down to hold the plate anchored sition onto body, and a. metal frame fitted to the body.

therein, a tubu- 1 its .llll

4. A push plug receptacle comprising a body, anchor eyelet pins molded in the body, wire binding posts molded in the body, heads made on the anchor eyelet pins and molded in the body, upstanding lugs made on the wire binding posts, a screw disposed in the binding post between the 111 a metal frame secured to the body bt e anchor eyelet? pins, said body provide with receiving slots, and contact pieces securedin the slots by the wire binding posts.

5.'A ush plug receptacle comprising a body, wire binding terminal posts molded in the body, lugs made on one end-of the posts, eyeleten s on the other end of the posts, screws threaded into the posts between the lugs, said body having receiving slots, contact parts in the said slots and, connected with t 'e posts,-a frame carrying the body, and a sheet insulator interposed between the frame and body.

6. A push plug receptacle comprising a body with pockets formed in the face and opening on the side to receive wire termi nals, binding posts embedded in the body, lugs made on the posts and extending up tact arranged in the receiving slot and mechanically securedto the body part by rivet connection withthe molded-1n terminal.

8. In an electrical fitting having a molded body, a wire terminal comprising a ta ped post molded in said body, an exposed iead for said post, and ears projecting from said head for confining wire beards.

9. In an electrical fitting having a'molded body, a wire terminal comprising a tapped post molded in said body, an exposed head for said post, and means associated with said head to preventrotation of the post in the body.

In testimony whereof I afiix' my signature at New York, in the county of New York and State of New York this 7th day of June, 1922.

RUDOLPH E. DE LAMAR. 

